含起重设备的船舶上层建筑吊装强度有限元分析

为准确计算船舶上层建筑吊装强度，采用MSC.Patran和MSC Nastran软件对175 000 t散货船上层建筑吊装建立整体结构有限元模型。采用含起重设备的有限元分析法计算上层建筑在吊装过程中的结构响应，并与直接约束法和惯性释放法进行对比分析，比较3种有限元分析法计算得到的应力、变形和吊点支反力情况，分析含起重设备的有限元分析法的准确性。结果表明，含起重设备的有限元分析法可对结构的应力、变形和吊点支反力进行较为准确的计算，优于直接约束法和惯性释放法。含起重设备的有限元分析法对船舶上层建筑吊装强度和吊装方案的评估具有一定的工程价值。

Finite Element Analysis of Hoisting Assembly Strength of Ship Superstructure Including Hoisting Equipment

In order to calculate the hoisting assembly strength of ship superstructure accurately, the finite element model of overall structure of superstructure hoisting assembly of 175 000 t bulk carrier is established with MSC.Patran software and MSC Nastran software. The structural response of the superstructure during hoisting assembly is calculated with the finite element analysis method including hoisting equipment, and the method is compared with the direct constraint method and the inertia relief method. The stress, deformation, and lifting point support reaction calculated with the three finite element methods are compared, and the accuracy of the finite element analysis method including hoisting equipment is analyzed. The results show that the finite element analysis method including hoisting equipment can calculate the stress, deformation, and lifting point support reaction of the structure more accurately, which is superior to the direct constraint method and the inertia relief method. The finite element analysis method including hoisting equipment is of certain engineering value for the evaluation of hoisting assembly strength and hoisting assembly scheme of ship superstructure.